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Old Nov 15, 2004, 7:34 AM   #11
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bokeh is the 'blur' in the background. The idea is that the subject is in focus but the background is blurred - it helps make the subject stand out more. As a general rule, the higher lower the f stop, the better the bokeh. Once you get higher than 4.0 (say 5.6) you really start to lose this feature.
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Old Nov 15, 2004, 9:08 AM   #12
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CarlsPhotos wrote:
Due to my lack of photographic knowledge, can you point out the 'bokeh' on your photograph to me?
JohnG is correct: Don't look at the flower but the green buds on the upper right, and the grass blade right below it to see the extra thin DOF.

This is why a 300mm f/2.8 cost so much for outdoor portrait or fashion photography -> It isolates the subject from their background bringing the people's attention to the area of focus only!
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Old Nov 15, 2004, 6:53 PM   #13
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Hehe - well reading all the posts up here from NHL and Madwand and others has convinced me that the Sigma 70-200 2.8 EX IF HSM was a good lens and worth the money (albeit much cheaper than the Canon 2.8 lens of same FL). So, I ordered it from B&H today along with the Sigma 1.4x TC.

When I get it, it is going to be interesting comparing it against the 17-85 kit lens that I got with my 20D.

Thanks, guys!
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